Outside of the US, ESS owns the BMW forced induction market. It has only been in the last couple years that ESS has really begun to make a strong presence into the US market. Their kits also go through my R&D and real world testing than any other aftermarket forced induction kits I've ever seen...not to discredit the R&D of other companies, but if a typical company tests for 1 year, they usually test for 2-3...god knows the kit that's on my car has been tested for almost 4 years now...